Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Reexamination Certificate
2007-03-27
2007-03-27
Keith, Jack (Department: 3663)
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
C359S333000
Reexamination Certificate
active
10303050
ABSTRACT:
Arrangements are provided for an amplitude balanced optical amplifier. A combination of an optical preamplifier and a gain/loss variation modification device (VMD) is employed. The gain/loss VMD compensates the gain variation across different wavelength channels introduced by the preamplifier. The gain/loss VMD operates based on a gain/loss profile that is complementary to that of the preamplifier. More than one amplifier may be deployed. In addition, feedback control may be applied to either the preamplifier or the gain/loss VMD to dynamically control the performance.
REFERENCES:
patent: 5905838 (1999-05-01), Judy et al.
patent: 6151160 (2000-11-01), Ma
patent: 6259555 (2001-07-01), Meli et al.
patent: 6356384 (2002-03-01), Islam
patent: 6359726 (2002-03-01), Onaka et al.
patent: 6396623 (2002-05-01), Wysocki et al.
patent: 6421155 (2002-07-01), Yano
patent: 6424444 (2002-07-01), Kahn et al.
patent: 6483636 (2002-11-01), Sugaya et al.
patent: 6532103 (2003-03-01), Sakano et al.
patent: 6580548 (2003-06-01), Islam
patent: 6592274 (2003-07-01), Kahn et al.
patent: 6646789 (2003-11-01), Kelkar et al.
patent: 6661975 (2003-12-01), Hall et al.
patent: 6690894 (2004-02-01), Ho et al.
patent: 2001/0017724 (2001-08-01), Miyamoto et al.
patent: 2002/0018268 (2002-02-01), Price et al.
patent: 2002/0149839 (2002-10-01), Hamoir
patent: 2003/0002113 (2003-01-01), Puc et al.
patent: 2003/0095323 (2003-05-01), Onaka et al.
patent: 2003/0152387 (2003-08-01), Duling et al.
patent: 2004/0151512 (2004-08-01), Gill et al.
patent: 0843199 (1996-05-01), None
patent: 08 130561 (1996-05-01), None
Aisawa et al., “A 1580-nm Band WDM transmission technology employing optical duobinary coding”, Journal of Lightwave Technology, pp. 191-199,vol. 17, No. 2, Feb. 1999.
Duling Irl N.
Matthews Paul J.
Vohra Sandeep T.
Bolda Eric
Broadband Royalty Corporation
FSP LLC
Keith Jack
Mirho Charles A.
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